ListView控件与longClick显示和隐藏复选框？ [英] ListView with longClick for showing and hiding Checkbox?
问题描述
我沿着 $ C $ READ C这里（网站链接） 。和code已被修改一点点地变成了这个样子：
I read along the code here (weblink). And the code has been modified a little bit to become like this:
FileArrayAdapter.java
public class FileArrayAdapter extends ArrayAdapter<Item> {
private Context c;
private int id;
private List<Item> items;
public FileArrayAdapter(Context context, int textViewResourceId,
List<Item> objects) {
super(context, textViewResourceId, objects);
c = context;
id = textViewResourceId;
items = objects;
}
public Item getItem(int i) {
return items.get(i);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater) c
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(id, null);
}
/* create a new view of my layout and inflate it in the row */
// convertView = ( RelativeLayout ) inflater.inflate( resource, null );
final Item o = items.get(position);
if (o != null) {
TextView t1 = (TextView) v.findViewById(R.id.TextView01);
setDefaultTextColor(t1);
TextView t2 = (TextView) v.findViewById(R.id.TextView02);
setDefaultTextColor(t2);
TextView t3 = (TextView) v.findViewById(R.id.TextViewDate);
setDefaultTextColor(t3);
/* Take the ImageView from layout and set the city's image */
ImageView imageCity = (ImageView) v.findViewById(R.id.fd_Icon1);
String uri = "drawable/" + o.getImage();
int imageResource = c.getResources().getIdentifier(uri, null,
c.getPackageName());
Drawable image = c.getResources().getDrawable(imageResource);
imageCity.setImageDrawable(image);
if (t1 != null)
t1.setText(o.getName());
if (t2 != null)
t2.setText(o.getData());
if (t3 != null)
t3.setText(o.getDate());
}
return v;
}
private void setDefaultTextColor(TextView tx) {
tx.setTextColor(Color.parseColor("#f8f9fe"));
}
}
和另一种对象，我迄今取得：
And also another object I made so far:
Item.java
public class Item implements Comparable<Item>{
private String name;
private String data;
private String date;
private String path;
private String image;
public Item(String n,String d, String dt, String p, String img)
{
name = n;
data = d;
date = dt;
path = p;
image = img;
}
public String getName()
{
return name;
}
public String getData()
{
return data;
}
public String getDate()
{
return date;
}
public String getPath()
{
return path;
}
public String getImage() {
return image;
}
public int compareTo(Item o) {
if(this.name != null)
return this.name.toLowerCase().compareTo(o.getName().toLowerCase());
else
throw new IllegalArgumentException();
} }
随着列表布局略低于定制：
listupload_row.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:contentDescription="@string/file_sharing_file_folder"
android:id="@+id/fd_Icon1"
android:layout_width="50dip"
android:layout_height="50dip" >
</ImageView>
<TextView
android:id="@+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dip"
android:layout_marginTop="5dip"
android:layout_toRightOf="@+id/fd_Icon1"
android:singleLine="true"
android:text="@+id/TextView01"
android:textStyle="bold" >
</TextView>
<TextView
android:id="@+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/TextView01"
android:layout_marginLeft="10dip"
android:layout_toRightOf="@+id/fd_Icon1"
android:text="@+id/TextView02" >
</TextView>
<TextView
android:id="@+id/TextViewDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/TextView01"
android:layout_marginLeft="5dip"
android:text="@+id/TextViewDate" >
</TextView>
</RelativeLayout>
我的问题是：
我知道如果我希望把复选框，然后我应该把它下的XML（布局）。
但我的情况下，我想使longClick可用于显示复选框即可。
而如何做到这一点？
I know If I want to put Checkbox then I should put it under the XML (layout). But my case is, I want to make the longClick available for showing the Checkboxes. And how to do that?
如果我只是在下面添加此code，当然它会设置的ListView有onLongClick事件......
If I simply add this code below, of course it will set the ListView to have onLongClick event....
dList.setLongClickable(true);
dList.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int pos, long id) {
// show the checkbox of each lines
return true;
}
});
但是，为了使一次onLongClick执行，我该如何显示组合框？反之亦然......
But to make it once onLongClick executed, how do I show the Combobox? and vice versa....
推荐答案
在XML其简单的附加复选框，并做出了能见度
Its simple add checkbox in xml and make visibility gone
android:visibility="gone"
而在FileArrayAdapter类声明radiobox为你做文本框和把你的
And declare a radiobox in FileArrayAdapter class as you did with textbox and the put your
onItemLongClickListener();
在该检查，如果复选框是可见的，然后让它消失或不可见使其可见。
In that check if checkbox is visible then make it disappear or if not visible the make it visible.
if(cb.isVisible()){
cb.setVisibility(View.GONE);
}else{
cb.setVisibility(View.VISIBLE);
}
这就是的吧。
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